[IGNITE-3912] Hadoop: rework HadoopClassLoader infrastructure

• Type: Task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.7
• Fix Version/s: 1.8
• Component/s: hadoop
• Labels: important
• Assignee: Vladimir Ozerov
• Reporter: Vladimir Ozerov
• Created: 16/Sep/16 07:57
• Updated: 27/Sep/16 07:45
• Resolved: 27/Sep/16 07:45

Description

This is an umbrella ticket to host tickets related to HadoopClassLoader rework logic.

In general, we should achieve clean and consistent separation of ignite-core on the one hand, and (ignite-hadoop + Hadoop dependencies) on the other.

Issue Links

• supercedes: IGNITE-3909 Hadoop: invalid classloader definition delegation logic.

Sub-Tasks

• Hadoop: Move HadoopClassLoader to core module.: Closed
• Hadoop: Create additional module.: Closed
• Hadoop: Move interfaces from "hadoop-impl" to "hadoop" module.: Closed
• Hadoop: Print warning if Hadoop is found in classpath of parent classloader.: Closed
• Hadoop: Fix native libraries loading mechanism.: Closed
• Hadoop: IgniteHadoopIgfsSecondaryFileSystem must use HadoopClassLoader.: Closed
• Hadoop: Introduce common HadoopClassLoader.: Closed
• Hadoop: HadoopProcesor must be created using HadoopClassLoader.: Closed
• Hadoop: change scripts.: Closed
• Hadoop: change class loading strategy: exclude only classes with direct Hadoop dependencies.: Closed
• Hadoop: Merge hadoop and hadoop-impl modules.: Closed
• Hadoop: Create separate class loader for test suites.: Closed
• Hadoop: add libraries necessary for mapr to the list of predefined libs.: Closed